Which two items properties must be set?

The Orders form must display the item total for products ordered. You decide to implement this functionality by creating an item in the ORDER_ITEMS block as a Calculated item. The item total is calculated by multiplying the UNIT_PRICE of the product by the QUANTITY ordered.
Which two items properties must be set? (Choose two)

A.
Database item must be set to No.

B.
Update Allowed must be set to No.

C.
Summary Function must be set to Sum.

D.
Item Type must be set to Display Item.

E.
Calculation Mode must be set to Formula.

F.
Calculation Mode must be set to Summary.

G.
Summarized Block must be set to ORDER_ITEMS.

H.
Formula must be set to an appropriate calculation.